They renew their vows every single year and it's safe to say that Seal and Heidi Klum are a couple very much in love.

And
it appears that the German model and her singer husband have no
problems displaying their affection and were seen doing just that as
they soaked up the sunshine in Sardinia.

The
couple were seen lying on a pontoon in the sea and they couldn't resist
indulging in a number of passionate kisses as they relaxed on holiday.

Kiss by a rose: Seal and his wife Heidi Klum share a kiss as they soak up the sunshine on a pontoon in Sardinia

Seal
showed off his statuesque figure in a pair of small bright red speedos
while Heidi displayed her model figure in a pretty sequin embellished
bikini.

And
it was certainly a family affair as their children, Leni, seven, Henry,
five, joined the couple out on the floating platform.

Hands
on: Seal, dressed in his red Speedos emerged from the water
hand-in-hand with his wife who looked fabulous in her embellished bikini

Making a splash: The couple, who renew their wedding vows every year, appeared to be having a great time in the water together

And Harry seemed in the mood to play as he interrupted his parents as they were canoodling.

Seal appeared happy to oblige and was seen diving into the water showing off his athletic figure.

Soaking
up the sunshine: The German model and her singer boyfriend relaxed on
the floating platform with their family enjoying the view in Porto Cervo

Family time: The couple were joined on the pontoon by their five-year-old son Henry who is in the mood to joke around

All together: Heidi and Seal enjoyed the day with their children, Leni, seven, who Seal adopted in 2009, and Henry

But as he hauled his frame back onto the floating platform his weight nearly tipped Heidi into the water.

As they made their way back to the beach the couple were hand-in-hand as they emerged from the water.

Showing off: Seal was seen diving straight into the water with Henry showing off his athletic frame in a pair of short red pants

Cut it out: As Seal climbed back onto the pontoon he nearly tipped Heidi off with his muscular frame

And Seal and Heidi were just as amorous out of the water showing affection at almost every opportunity.

Later
in the day mother-of-four Heidi was seen with their youngest child,
two-year-old Lou Sulola, as they took a walk in the sand.

The
family could well be one of the happiest celebrities families with
Seal and Heidi no stranger to showing off their love for one another.

Catching
some rays: As her husband and son played on the pontoon Heidi relaxed
with her eyes closed soaking up the sunshine and working on her tan

You are all wet: After his dip Seal decided to give his wife a cuddle while Heidi kept her eyes firmly closed

Every year the couple, who have been married six years, renew their wedding vows in themed ceremonies on May 10.

Yesterday
Heidi was seen making the most of her holiday supping a bottle of beer
while she spent time on the beach with her family.

Heidi,
38, showed off her remarkable form in a different two piece bikini
she'd been wearing the day before - her ultra flat stomach still very
much on display.

The
black number features khaki coloured straps and detailing - slightly
different to the previous day's ensemble which featured sparkling gold
details on the hips.

Out
of water action: As the couple spent the rest of the day on the beach
they didn't miss the opportunity to show the other just how much they
care

Model
figure: Heidi showed off her model figure in yet another skimpy bikini
while Seal showed off his muscles in a pair of barely there Speedos

Annoyingly
it appears her penchant for bottled beers, Corona in this case, has had
very little effect on her figure, perhaps because she consumes
alcoholic beverages in moderation and still subscribes to a healthy
exercise regime.

On
Sunday Heidi was seen sunbathing topless in Porto Cervo, unveiling the
figure that has won her contracts with numerous fashion houses around
the globe and a plethora of magazine covers.

Model mummy: Heidie and her youngest daughter Lou Sulola, two enjoyed a stroll along the beach together

Heavy
lifter! The mother of four was also seen lifting her son Johan, four,
out of the water and taking him back to the beach for lunch

Heidi,
Seal and their children (Leni, Lou, Johan and Samuel) are guests at the
Hotel Cala di Volpe - where she and Seal bumped into soul singer Macy
Gray as Heidi revealed on Twitter.